Beyond Linux® From Scratch (systemd Edition) - Version 11.2

Chapter 42. Multimedia Libraries and Drivers

libtheora-1.1.1

Introduction to libtheora

libtheora is a reference implementation of the Theora video compression format being developed by the Xiph.Org Foundation.

This package is known to build and work properly using an LFS-11.2 platform.

Package Information

libtheora Dependencies

Required

libogg-1.3.5

Recommended

libvorbis-1.3.7

Optional

SDL-1.2.15 and libpng-1.6.37 (both to build the example players), Doxygen-1.9.4, texlive-20220321 (or install-tl-unx), BibTex, and Transfig (all four to build the API documentation), and Valgrind-3.19.0

User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/Libtheora

Installation of libtheora

Install libtheora by running the following commands: 

sed -i 's/png_\(sizeof\)/\1/g' examples/png2theora.c &&
./configure --prefix=/usr --disable-static &&
make

If you wish to run the tests, issue: make check.

Now, as the root user: 

make install

If you wish to install the examples (so that you can hack on theora), install them as the root user: 

cd examples/.libs &&
for E in *; do
  install -v -m755 $E /usr/bin/theora_${E}
done

Command Explanations

sed -i 's/png_\(sizeof\)/\1/g' examples/png2theora.c: This sed fixes build with libpng 1.6.

--disable-static: This switch prevents installation of static versions of the libraries.

Contents

Installed Programs: None, unless you installed the examples
Installed Libraries: libtheora.so, libtheoraenc.so, and libtheoradec.so
Installed Directories: /usr/include/theora and /usr/share/doc/libtheora-1.1.1

Short Descriptions

libtheora*.so

contains the functions to read and write video files